A test that is used to diagnose myasthenia gravis (MG) is ordered by the physician. Because the test involves an injection of a drug that makes muscle strength improve for about five minutes, the nurse realizes that this test most likely is:
1. the Tensilon test.
2. a computed tomography (CT) scan of the legs.
3. a nerve stimulation study.
4. analysis of antiacetylcholine receptor antibodies.
Correct Answer: 1
The Tensilon test produces a five-minute increase in muscle strength. A computed tomography (CT) scan of the legs is not indicated for this patient. The nerve stimulation study and the analysis of antiacetylcholine receptor antibodies are tests that can be done to help diagnose MG, but do not require a drug injection.
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